Electrical transmission or interconnection systems – Plural supply circuits or sources – Load current control
Patent
1997-04-11
1999-08-03
Paladini, Albert W.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Load current control
310 74, 322 4, 322 7, 318150, 318161, H02P 948
Patent
active
059329351
ABSTRACT:
A flywheel energy conversion device provides highly efficient conversion between kinetic and electrical energy. The flywheel produces increased output by providing armature coils in an air gap formed about the flywheel (both radial and axial embodiments are described). In preferred embodiments, field coils of a magnetic circuit are energized with DC drive current that creates homopolar flux within a rotating solid rotor having teeth cut from a flat disk. The total reluctance of the magnetic circuit and total flux remain substantially constant as the rotor rotates. The flux may travel radially outward and exit the flat disk through the teeth passing across an armature air gap. Airgap armature coils are preferably utilized in which the changing flux density (due to the rotating teeth) induces an output voltage in the coils. The flux is diffused before returning to the rotor in one of several ways such that core losses are effectively reduced, thereby enabling the flywheel to operate efficiently at high frequencies.
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Rinehart, R.E., "A Flywheel Energy Storage Propulsion System for Intra Urban Buses," 1980 Flywheel Technology Symposium, Oct., 1980, Scottsdale, Arizona, pp. 145 to 149.
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Andrews James A.
Clifton David B.
Little Scott R.
Pinkerton Joseph F.
Active Power Inc.
Morris Robert W.
Paladini Albert W.
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